It’s been five long years since MF DOOM and Ghostface Killah announced that they would be dropping a joint album. Earlier this week, a new song from the duo dropped, and got the scoop that the two—now collectively calling themselves DOOMSTARKS—have recently regrouped and are finally preparing to release the disc sometime in the near future. But the question remains, what took them so long? Taking a cue from David Letterman, XXL put together a list of the Top 10 reasons DOOM and Ghost didn’t drop their LP sooner.